12122388 has 72 divisors (see below), whose sum is σ = 32288256. Its totient is φ = 3830400.

The previous prime is 12122387. The next prime is 12122389. The reversal of 12122388 is 88322121.

12122388 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (12122387) and next prime (12122389).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12122387) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 63373 + ... + 63563.

It is an arithmetic number, because the mean of its divisors is an integer number (448448).

Almost surely, 2^12122388 is an apocalyptic number.

12122388 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 12122388, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (16144128).

12122388 is an abundant number, since it is smaller than the sum of its proper divisors (20165868).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12122388 is a wasteful number, since it uses less digits than its factorization.

12122388 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 285 (or 280 counting only the distinct ones).

The product of its digits is 1536, while the sum is 27.

The square root of 12122388 is about 3481.7219877526. The cubic root of 12122388 is about 229.7185467126.

It can be divided in two parts, 1212 and 2388, that added together give a square (3600 = 60²).

The spelling of 12122388 in words is "twelve million, one hundred twenty-two thousand, three hundred eighty-eight".